聚砜/聚苯胺-嵌段式聚醚Pluronic F127复合超滤膜的制备及性能

doi:10.3969/j.issn.0438-1157.2013.02.040

化工学报 ›› 2013, Vol. 64 ›› Issue (2): 702-710.DOI: 10.3969/j.issn.0438-1157.2013.02.040

• 材料化学工程与纳米技术 • 上一篇下一篇

聚砜/聚苯胺-嵌段式聚醚Pluronic F127复合超滤膜的制备及性能

赵博然^1,2,3, 王志^1,2,3, 赵颂^1,2,3, 王纪孝^1,2,3, 王世昌^1,2,3

1. 天津大学化工学院化学工程研究所,天津 300072;
2. 化学工程联合国家重点实验室(天津大学),天津 300072;
3. 天津市膜科学与海水淡化技术重点实验室(天津大学),天津 300072

收稿日期:2012-07-26 修回日期:2012-11-19 出版日期:2013-02-05 发布日期:2013-02-05
通讯作者: 王志
作者简介:赵博然(1987—),男,硕士研究生。

Preparation and performance of PSf/PANI-F127 composite ultrafiltration membrane

ZHAO Boran^1,2,3, WANG Zhi^1,2,3, ZHAO Song^1,2,3, WANG Jixiao^1,2,3, WANG Shichang^1,2,3

1. Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2. State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China;
3. Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, China

Received:2012-07-26 Revised:2012-11-19 Online:2013-02-05 Published:2013-02-05

摘要/Abstract

摘要： 选用具有不同改性机理的嵌段式聚醚Pluronic F127与聚苯胺(PANI)纳米纤维共同作为添加剂共混改性聚砜(PSf)超滤膜,利用浸没沉淀相转化法制备出PSf/PANI-F127复合超滤膜。考察、比较并分析两种改性材料同时存在对膜结构和膜性能的影响。膜结构通过傅里叶衰减全反射红外(ATR-FTIR)、X射线光电子能谱(XPS)、X射线能量色散谱(EDS)、扫描电镜(SEM)和接触角等测试表征。膜性能通过纯水通量、截留率、抗污染性能以及添加剂稳定性结果进行评价。实验结果表明,Pluronic F127的加入可以更有效地提高膜表面亲水性,而PANI纳米纤维的加入则可以使膜孔隙率增大、表面孔径尺寸降低、皮层变薄。实验进一步发现,两种添加剂在改善膜结构与性能上起协同作用。PANI-F127一方面提高了膜纯水通量与抗污染性能,另一方面克服了单独使用Pluronic F127时添加量大、截留率低、添加剂易流失的缺点。

关键词: 超滤膜, 嵌段共聚物, 聚苯胺, 亲水性, 抗污染

Abstract: A series of polysulfone(PSf)/polyaniline-Pluronic F127(PANI-F127) composite ultrafiltration membranes, using two polymers namely PANI nanofibers and triblock copolymer Pluronic F127 with different modifying mechanisms as co-additives, were prepared via immersion precipitation method. The effects of the co-additives on membrane structure and performance were systematically investigated, compared and analyzed. Membrane structure was characterized by Fourier transform infrared spectroscopy(ATR-FTIR), X-ray photoelectron spectroscopy(XPS), energy dispersive X-ray spectroscopy(EDS), scanning electron microscope (SEM), porosity, and contact angle measurement. Membrane performance was evaluated by pure water flux, protein rejection, antifouling property and additive stability. Results demonstrate that Pluronic F127 was more effective in improving membrane hydrophilicity,while PANI nanofibers played an important role in increasing membrane porosity and decreasing surface pore size and skin layer thickness. Furthermore, it was found that the interaction between PANI nanofibers and Pluronic F127 has synergistic effects on improving membrane performance and depressing the defects such as large addition amount, low rejection and poor additive stability when using Pluronic F127 as the additive.

Key words: ultrafiltration membrane, triblock copolymer, polyaniline, hydrophilicity, antifouling

中图分类号:

TQ028.8

赵博然, 王志, 赵颂, 王纪孝, 王世昌. 聚砜/聚苯胺-嵌段式聚醚Pluronic F127复合超滤膜的制备及性能[J]. 化工学报, 2013, 64(2): 702-710.

ZHAO Boran, WANG Zhi, ZHAO Song, WANG Jixiao, WANG Shichang. Preparation and performance of PSf/PANI-F127 composite ultrafiltration membrane[J]. CIESC Journal, 2013, 64(2): 702-710.

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聚砜/聚苯胺-嵌段式聚醚Pluronic F127复合超滤膜的制备及性能

Preparation and performance of PSf/PANI-F127 composite ultrafiltration membrane

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